contrib/asv.conf.json

shelve: wider check for successful abort in test

The test was previously focusing on checking that the "sub-rebase" aborted
properly. Since rebase is an implementation details we should also check for
other messages.

Differential Revision: https://phab.mercurial-scm.org/D3686

{
    "version": 1,
    "project": "mercurial",
    "project_url": "https://mercurial-scm.org/",
    "repo": "..",
    "branches": ["default", "stable"],
    "environment_type": "virtualenv",
    "show_commit_url": "https://www.mercurial-scm.org/repo/hg/rev/",
    "benchmark_dir": "benchmarks",
    "env_dir": "../.asv/env",
    "results_dir": "../.asv/results",
    "html_dir": "../.asv/html"
}